Comparison

Sleepy Time vs Sleep Calculator App

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Sleepy Time

This app helps you determine the optimal time to go to bed to ensure you get enough rest. It calculates your ideal bedtime based on your wake-up time, desired sleep duration, and how long it takes you to fall asleep, offering reminders to help you stick to your schedule.

Highlights
  • Backwards bedtime calculator
  • Nightly bedtime reminder
  • Caffeine cutoff reminder
  • Personalized sleep hour settings
  • Unwind time adjustment
  • Remembers user settings
Features
Read full description

Wake up rested by going to bed at the right time. Sleepy Time is a simple bedtime calculator. Tell it when you need to wake up, how many hours of sleep you want, and how long it usually takes you to fall asleep. It works backwards and shows you exactly when to get into bed, and the time you'll be asleep by. Then let it remind you. Sleepy Time can send a notification every night when it's time to head to bed, and another when it's time to put down the coffee. HOW IT WORKS • Set your wake-up time • Choose how many hours of sleep you want: 7, 8, 7.5, whatever works for you • Add your unwind time, the minutes it takes you to drift off once you're in bed • See your bedtime instantly, along with the time you'll be sleeping by FEATURES • Backwards bedtime calculator that updates as you type • Nightly bedtime reminder • Caffeine cutoff reminder, set 6 hours before your bedtime • Remembers your settings, so tomorrow takes one glance • Simple and private: no account or sign-up required Feeling run down? Bump your sleep hours up. Take a while to fall asleep? Increase your unwind time. Keep adjusting until you land on a bedtime that fits your life. SLEEP TIPS • Your bedtime is when you get into bed, not when you fall asleep. Use your unwind time to read a book instead of scrolling. Light from screens can delay melatonin, the hormone that tells your body it's time to sleep. • Life gets busy. Turn on the bedtime reminder so the evening doesn't get away from you. • Watch the clock on caffeine. A 2013 study in the Journal of Clinical Sleep Medicine found that caffeine taken even 6 hours before bed noticeably disrupted sleep. That's why Sleepy Time's caffeine reminder goes off 6 hours before your bedtime. • Shifting to an earlier schedule? Some people find melatonin helpful, taken about an hour before bed, while their body adjusts. Check with your doctor or pharmacist before starting any supplement. • Consistency matters. Going to bed and waking up at the same time every day, weekends included, helps your body keep a steady rhythm. Sleepy Time is a planning tool. It is not intended to diagnose or treat any sleep condition. Questions or ideas? Tap Contact in the app menu. We read every message.

About

Sleep Calculator App

Optimize your sleep by calculating ideal bedtime and wake-up times based on natural 90-minute sleep cycles. Includes relaxing sounds and meditation to help you fall asleep faster and wake up feeling refreshed.

Highlights
  • Calculate best bedtime
  • Calculate best wake-up time
  • Select desired wake-up time
  • Relaxing sounds
  • Sleep meditation
  • No registration required
Features
Read full description

A good day starts with a good night! Go to bed at the right time and wake up between your natural 90-minute sleep cycles to feel rested and refreshed. A good night's sleep consists of 3 to 6 complete cycles. ◦ Calculate your best bedtime ◦ Calculate your best wake-up time ◦ Select when you want to wake up ◦ Relaxing sounds and sleep meditation to help you fall asleep faster. The average person takes about 15 minutes to fall asleep. If you wake up at one of the calculated times, you'll wake up between 90-minute sleep cycles. The Sleep Calculator app helps you decide when to go to sleep so you can wake up at a specific time and ensure a good night's rest, or what time you should wake up if you want to go to sleep right now. Completely free app. No registration required. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://scannercalorieios2024.web.app/

Screenshots

Sleepy Time4 screens
Sleep Calculator App4 screens

Verdict

The call

The clearest difference is rating: Sleepy Time at 4.0 against Sleep Calculator App's 3.0. Sleepy Time also leads on in-app purchases (none vs 1) and update cadence (every 3 months vs every 8 months). On price, review sentiment, ratings volume and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Sleep Calculator App sells 1 one-off in-app purchase. Sleepy Time asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sleepy Time holds the better App Store score, 4.0 against 3.0. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews split almost evenly too, at 0% and 0% positive.

UpkeepUpdate frequency

Sleepy Time ships an update every 3 months, Sleep Calculator App every 8 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Sleepy Time versus Sleep Calculator App: the parameters behind the verdict, then further details
ParameterSleepy TimeSleep Calculator App
PriceFreeFree
Rating4.0 (3 ratings) — better3.0 (2 ratings)
Positive reviews0.0% of reviews0.0% of reviews
Number of ratings3 — better2
Update frequencyEvery 3 months — betterEvery 8 months
AdsYesYes
In-app purchasesNo — betterYes
MonetizationAd-supported — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size16 MB31 MB
Age rating12+4+
DeveloperJMS TECHNOLOGY SYSTEMSLuz Ochoa

Customer experience

Sleepy Time

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Sleep Calculator App

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

None

Sleepy Time

No in-app purchases

1 purchases

Sleep Calculator App

One-time1
  • Lifetime Premium Subscription$6.99

Questions

Is Sleepy Time free?
Sleepy Time is free to download, with no in-app purchases.
Is Sleep Calculator App free?
Sleep Calculator App is free to download, with in-app purchases available.
Which has better reviews, Sleepy Time or Sleep Calculator App?
Sleepy Time is rated higher. Sleepy Time averages 4.0 out of 5 from 3 ratings, while Sleep Calculator App averages 3.0 from 2 ratings.
Do Sleepy Time or Sleep Calculator App have ads?
Both Sleepy Time and Sleep Calculator App show ads.
Which is updated more often, Sleepy Time or Sleep Calculator App?
Sleepy Time ships an update every 3 months, and Sleep Calculator App every 8 months. Most recently, Sleepy Time was updated on November 6, 2026 and Sleep Calculator App on November 3, 2026.

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